Passive Components

A passive component is a module that does not require energy to operate, except for the available alternating current (AC) circuit that it is connected to. A passive module is not capable of power gain and is not a source of energy. A typical passive component would be: resistors, inductors, capacitors and transformers which together are required to build any electrical or electronic circuit.

Passive devices can be used individually or connected together within a circuit, either in a series or in a parallel combination to control complex circuits or signals.

Types of Passive Components

  • Capacitors

A capacitor is a component that can gather and hold a charge in a way that is similar to how a battery functions. The capacitor is made of 2 close conductors (usually plates) that are separated by a dielectric material. The plates accumulate electric charge when connected to power source. One plate accumulates positive charge and the other plate accumulates negative charge. It can hold the charge even when the voltage is no longer applied. Different types of capacitors are film capacitors, mica capacitors, ceramic capacitors, electrolytic capacitors, aluminium electrolytic capacitors, tantalum electrolytic capacitors and power factor correction capacitors

  • Resistors

A Resistor is an electrical device that resists the flow of electrical current. Although a resistor does not amplify or shape the electric current in any way its a powerful little device as it enables you to put the brakes on current flow in a very controlled way

  • Inductors

An inductor is a passive device that can store or deliver energy but cannot generate it. An ideal inductor is lossless, meaning that it can store energy indefinitely as no energy is lost as heat. Inductors are sometimes known as coils, chokes, electromagnets and solenoids

  • Ferrite Cores

A ferrite core is a ceramic compound that includes a mix of iron and another type of metal. Ferrite is common in many types of electrical components, including antennas. This magnetic core features wound components, such as windings from a transformer and inductors. It is useful because it offers low electrical conductivity along with high magnetic permeability.

  • Surge Protection Components

Surge protectors are a part of nearly every home and office today. They provide your expensive electronic devices with added protection against surges of electricity, which would ultimately destroy them.

Antennas
Antennas
Capacitors
Capacitors
Crystals, Oscillators & Resonators
Crystals, Oscillators & Resonators
EMI Filters & Protection
EMI Filters & Protection
Fixed Resistors
Fixed Resistors
Inductors
Inductors
Passive Components Kits
Passive Components Kits
Rotary Encoders
Rotary Encoders
Sounder, Buzzer & Microphone Components
Sounder, Buzzer & Microphone Components
Surge Protection Components
Surge Protection Components
Variable Resistors
Variable Resistors

154991 Products showing for Passive Components

86 of 999+
RS PRO 120kΩ, 0805 (2012M) Thick Film SMD Resistor ±1% 0.125W
  • RS Stock No. 804-6603
Each (On a Reel of 5000)
£0.004
Yageo 4.7kΩ Metal Film Fixed Resistor 0.25W ±1% MFR-25FTE52-4K7
  • RS Stock No. 199-7625
  • Mfr. Part No. MFR-25FTE52-4K7
Each (On a Tape of 100)
£0.016
Better World
Siemens 3SU1 2.2kΩ Rotary Potentiometer 1-Gang Panel Mount, 3SU1200-2PW10-1AA0
  • RS Stock No. 183-7287
  • Mfr. Part No. 3SU1200-2PW10-1AA0
Each
£67.66
Arcol Ohmite 10mΩ Fixed Resistor 2W ±1% 12FR010E
  • RS Stock No. 124-9278
  • Mfr. Part No. 12FR010E
Each (In a Bag of 5)
£3.224
EPCOS B32529 Polyester Film Capacitor, 40 V ac, 63 V dc, ±5%, 100nF, Through Hole
  • RS Stock No. 334-221
  • Mfr. Part No. B32529C0104J000
Each (In a Pack of 25)
£0.116
Panasonic 22μF Aluminium Electrolytic Capacitor 25V dc, Radial, Through Hole - ECEA1EN220X
  • RS Stock No. 176-3785
  • Mfr. Part No. ECEA1EN220X
Each (In a Pack of 25)
£0.143
Vishay 47kΩ Thin Film Resistor 0.4W ±1% MBA02040C4702FC100
  • RS Stock No. 157-525
  • Mfr. Part No. MBA02040C4702FC100
Each (In a Pack of 100)
£0.194
Vishay 22μF Aluminium Electrolytic Capacitor 40V dc, Axial, Through Hole - MAL203037229E3
  • RS Stock No. 108-5333
  • Mfr. Part No. MAL203037229E3
Each (In a Pack of 5)
£1.618
Yageo 10kΩ, 1206 (3216M) Thick Film Surface Mount Resistor Array ±1% 62.5mW
  • RS Stock No. 242-7230
  • Mfr. Part No. TC164-FR-0710KL
Each (On a Tape of 100)
£0.024
Bourns CR0603 100Ω, 0603 (1608M) Thick Film SMD Resistor ±1% 0.1W
  • RS Stock No. 740-8798
  • Mfr. Part No. CR0603-FX-1000ELF
Each (In a Pack of 50)
£0.008
TE Connectivity 3520 3.9Ω, 2512 (6432M) Thick Film SMD Resistor ±5% 1W
  • RS Stock No. 224-0086
  • Mfr. Part No. 35203R9JT
Each (In a Pack of 10)
£0.106
Schurter, FPBB 3A 250 V ac/dc 50Hz, DIN Rail Power Line Filter, Single Phase
  • RS Stock No. 188-0364
  • Mfr. Part No. 3-103-674
Each
£20.75
RS PRO 1kΩ, 0402 (1005M) Thick Film SMD Resistor ±1% 0.063W
  • RS Stock No. 804-7158
Each (On a Reel of 10000)
£0.002
RS PRO 3.9kΩ Carbon Film Resistor 2W ±5%
  • RS Stock No. 707-8892P
Each (Supplied as a Tape)
£0.187
RS PRO 10μF Electrolytic Tantalum Electrolytic Capacitor 50V dc
  • RS Stock No. 181-4768
Each (In a Pack of 5)
£2.87
Panasonic 2200μF Aluminium Electrolytic Capacitor 16V dc, Radial, Through Hole - EEUFS1C222L
  • RS Stock No. 145-8513
  • Mfr. Part No. EEUFS1C222L
Each (In a Pack of 10)
£0.586
5kΩ, SMD Trimmer Potentiometer 0.5W Top Adjust Bourns, 3361
  • RS Stock No. 743-2417
  • Mfr. Part No. 3361P-1-502GLF
Each
£1.08
Arcol Ohmite 100MΩ Thick Film Resistor 1.5W ±1% SM104031006FE
  • RS Stock No. 893-4850
  • Mfr. Part No. SM104031006FE
Each
£3.73
20kΩ, Through Hole Trimmer Potentiometer 0.5W Top Adjust Bourns, 3296
  • RS Stock No. 167-3385
  • Mfr. Part No. 3296W-1-203LF
Each (In a Tube of 50)
£1.372
Yageo 120kΩ Metal Film Fixed Resistor 0.6W ±1% MF0207FTE52-120K
  • RS Stock No. 199-7540
  • Mfr. Part No. MF0207FTE52-120K
Each (On a Tape of 100)
£0.022
Results per page
1
86
7750

Guides & Articles

Article image
LED Resistor Value Calculator
A calculator designed to help you understand what resistance value you require from your LED resistor, in order to ensure safety for your LED lighting.
Learn more
Article image
Resistors Guide
What are the different types of resistors? Learn more in our comprehensive guide.
Read more
Article image
Potentiometers Guide
Our potentiometers guide will help you understand their uses, how they work, the various types and characteristics.
Read more
Article image
A Guide to Voltage Controlled Oscillators
This guide covers voltage controlled oscillators, explaining what they are, the different types available, and examples of how they fit into a circuit.
Explore VCOs

Related links